Contents
BS EN ISO 9906:2012
ISO 9906:2012(E)
Page
Foreword
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iv
Introduction
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v
1
Scope
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1
2
Normative references
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1
3 Terms, definitions, symbols and subscripts
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1
3.1 Terms and definitions
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1
3.2 Terms relating to quantities
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3
3.3 Symbols and subscripts
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9
4
Pump measurements and acceptance criteria
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10
4.1 General
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10
4.2 Guarantees
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11
4.3 Measurement uncertainty
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11
4.4 Performance test acceptance grades and tolerances
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15
4.5 Default test acceptance grades for pump application
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21
5
Test procedures
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22
5.1 General
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22
5.2 Date of testing
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22
5.3 Test programme
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22
5.4 Testing equipment
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22
5.5 Records and report
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22
5.6 Test arrangements
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23
5.7 Test conditions
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23
5.8 NPSH tests
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23
6
Analysis
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26
6.1 Translation of the test results to the guarantee conditions
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26
6.2 Obtaining specified characteristics
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27
Annex A (normative) Test arrangements
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28
Annex B (informative) NPSH test arrangements
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37
Annex C (informative) Calibration intervals
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40
Annex D (informative) Measurement equipment
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41
Annex E (informative) Tests performed on the entire equipment set — String test
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46
Annex F (informative) Reporting of test results
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48
Annex G (informative) Special test methods
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52
Annex H (informative) Witnessed pump test
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53
Annex I (informative) Conversion to SI units
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54
Annex J (informative) Measurement uncertainty for NPSH test
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56
Bibliography
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57
© ISO 2012 – All rights reserved
iii
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